Median and Mean problem

[billzhao]

Please help to explain. Thanks!

[Bidisha_800]

I'm getting (A)

median =130 K
mean = 150 K

There are 15 hours so price of 8th house must be 130 K

Now total sale price of 15 hours are 15 * 150 K = 2250 K

The max price of first 8 hours are 8*130K = 1040K

so the sum of last 7 hours = 1210 K

so if you select prices > 130 K but less than 165 K, one house must be > 165 K

rest of the two statements may or may not be true.